/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package AdminController;

import General.FoUtils;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.transform.stream.StreamSource;

/**
 *
 * @author NganNLK60334
 */
public class CreatePDFController extends HttpServlet {
   
    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try {
            String webPath = getServletContext().getRealPath("/");
//            String srcPath = webPath.substring(0, webPath.indexOf("build"));
//            String xsdPath = srcPath + "src/java/XSD/products.xsd";
            String xslPath = webPath + "WEB-INF/Admin/listProductPDF.xsl";
            String filePath = webPath + "WEB-INF/Products.xml";
            String action = request.getParameter("action");
            String currentPage = request.getParameter("current");
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet CreatePDFController</title>");  
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet CreatePDFController at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
            */
            if (action.equals("createPDF")) {
                Date date = new Date();

                String productxml = webPath + "WEB-INF/Products.xml";
                String xslFilePath = webPath + "WEB-INF/Admin/listProductPDF.xsl";
                String foPath = webPath + "WEB-INF/Admin/listProductPDFFo.fo";
                ByteArrayOutputStream output = new ByteArrayOutputStream();
                StreamSource xmlFile = new StreamSource(new File(productxml));
                output = FoUtils.createFileFo(webPath, xslFilePath, productxml, null, foPath);

                response.setContentType("application/pdf");
                byte[] content = output.toByteArray();
                response.setContentLength(content.length);
                // write to output
                response.addHeader("Content-Disposition",
                        "attachment; filename=" + "ListProduct_" + date + ".pdf");
                response.getOutputStream().write(content);
                response.getOutputStream().flush();
            }
        } catch(Exception ex){
            System.out.println(ex.toString());
        }
    } 

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    } 

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
